What year/mileage/engine is your Q7? I'm trying to get an idea of what mileage/age the rear mains/sump seals let go on these. Would be helpful if you edited your post to include that type of detail for others to see as well. Also, if you have TDI, did your Crank Pulley/harmonic balancer fail yet..it's also under warranty, but most TDI owners on here don't seem to realize that and have been swapping them out on their own dime?